Adding weapons from another PWE game (PWI)

Alright, what's up guys?
So, I was experimenting with some PW .pcks and found some cool weapon models I'd like to use.

I've pathed the model and it works, it's just upside-down.

What I've tried so far:
-I used 010 editor with .BON template to modify the X Y Z and make it match another weapon from FW
-Editing the .BON manually
-Editing the .ECM (I noticed PWI doesn't use it for bone structure)
-Using files from a FW model and changing the .ski and .dds

As you can guess, none of these things worked. If you want to try yourself, go ahead. I've attached the .zip below. If you figure something out, please let me know. I'd like to know myself.